Tire mounting



Feb. I7, 1925.

R. c. NEWHOUSE 'mm MOUNTING Filed Feb.

Vla

Patented lrebfl'if', i925.

RAY C. NEWHOUSE, OF VJAUAVOSA, TISCONSIN, ASSGNOR T0 ALLIS-CHALMERS IVIANUFACTURXNG COMPANY, 0F MITAUKEE, VUSGONSIN, A CORPORATION OF DELAV/"ARE,

TRE MOUNTING.

Application filed February 25, 1924. Serial No. 695,136.

To cZZwiom t may concern.'

Be it known that l, liar C. niviiousn, a citizen of the United States, residing at lVauwatosa, in the county ot Milwaukee and State ot Wisconsin, have invented a certain new and useful improved 'lirc Mounting, of which the following is a specid iication.

rhis invention relates in general to im-- provements in the construction of supports Yfor rotating elements and relates more specitically to an improved tire mounting and retainer especially applicable to the tires of rotating drums such as kilns, dryers, tube mills or the like.

" An object oi the invention is to provide a tire mounting which is simple in construction and efficient in operation.

ln the construction of rotary kilns and the like, it is customary to support the shell or drum by means of rollers which coact with one or more tires embracing the drum. The drum is ordinarily constructed ot sheet metal which, in spite ofthe provision ot heat insulating linings, is subject to considerable expansion and contraction due to variations in temperature. The tires are ordinarily formed by casting and ot relatively massive construction thus making them relatively immune to expansion due to radiation of heat 'from the interior ot the kiln. "W hen such tires are rigidly attached to the drum as by riveting` or bolting, the diiiie-rences in expansion and contraction between the shell and the tires, cause the tasteningelements to break thereby releasing the tire and permitting displacement thereof along the drum.

The present improvement contemplates provision of a tire mounting for kilns and the like, in which the tire is not directly rigidly clamped to the shell thus eliminating objectionable breakage ot rivets or the like. ln accordance with the present invention. the tires are not necessarily lined against rotation relatively to the shell but are retained substantially coaxial therewith by means of filler blocks which are inserted in spaces provided between the tires and the shell. Relative displacement of the tires along the shell is, however, positively prevented bv means of suitable abutments coacting with end surfaces of the tires. The filler blocks and the abutments may be riv eted or otherwise attached directly to the drum, but the tires are at most 'frictionally retained and may be tree from contact with the drum at places remote from the support ing rollers.

A clear conception ot an embodiment oit the invention may be had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same or similar' parts in the various views.

Fig. l is a fragmentary part sectional view of that portion ot a rotary kiln adjacent to one ot the supporting tires thereof.

Fig. 2 is a itragmentary sectional view taken through another portion of the kiln and tire. i

rlhe shell or drinn 2 ot a rotary kiln, d yer, tube mill or the like, is ordinarily formed ot one or more plates which are end united to form the complete drum, by means of stay plates l0 disposed substantially parallel to the longitudinal axis ot the drum. The shell 2 and stay plates l0 are ordinarily formed ot' sheet metal and the stay plates l0 are attached to the segments ot the shell by riveting, welding, or otherwise. One or more annular tires 3 ordinarily formed of relatively massive construction and by casting, embrace the drum 2. these tires having internal bore.l somewhat larger than the external diameter ot the drum 2. ln order to secure suiiicient bearing between the rolatively thin shell 2, and the tire a number ot annular plates (i. 7 are disposed within the space between the drum 2 and the tire 3, these plates being secured directly to the drum 2 by means of rivets 8. As shown in the drawing, the inner plate is considerably wider than the outer plate 6, and in kilns of large diameter, these plates would ordinarily comprise a plurality ot end abutting segments. In some instances it may be preferable to provide lap plates 9 joining the stay plates l() with the annular plate 7.

Dispose-d within the annular space between the outer annular plate 6 and the tire 3, is an annular series of filler blocks 5 eX- tending transversely ot' the tire 3. These filler blocks 5 are ordinarily inserted endwise in the space between the plate 6 and the tire 3 and may in some instances trictionally hold the tire 3 against rotation rel* atively to the shell 2, although the enormous weight of the loaded drum makes it unneeessary to positively prevent relative rotaroo tion of the drum 2 and tires 3. The ends of the plates or blocks 5 project beyond the tire 3 and annular ring abutments 4 coact with these projecting ends of the blocks 5. The ring abutments 4 also are adapted to coact with the opposite end surfaces of the tire 3 and are riveted to the blocks 5, plates 6, 7 and to the shell 2 by means of an annular series of rivets 8. It will be obvious that the ring abutments 4 positively prevent undesirable displacement of the tire 3 along the drum 2.

In constructing the kiln, lthe drum 2 is iirst assembled and the plates 6, 7, 9 and lO are riveted thereto by means of rivets 8. The rivets which pass through the shell 2 and both of the plates 6, 7 are formed with external countersunk heads in order to leave a. smooth external surface upon the annular plate 6. The tire 3 is then slipped over the plate 6 after which the liller blocks 5 are inserted endwise. The ring abutmentsl 4 may then be properly positioned andthe rivet holes 'for the long rivets which retain the ring abutments 4 in place, may then be drilled and these rivets applied.

It will be obvious that with a rtire thus mounted, the danger of breaking undesirably long rivets due to unequal expansion or contraction, is eliminated. As the tires 3 are applied when the drum 2 is cold and liberal clearances are ordinarily allowed between the tires and the blocks 5, subsequent heating and cooling ot the drum will not .affect the rivets 8. It" it becomes necessary to remove one ot the tires 3, it is only necessary to remove the rivets 8 which hold the ring abutments 4 and the filler blocks 5 in place, whereupon the ring ,-abutments are freely removable and the filler blocks 5 may be withdrawn from normal position.

It should be understood that it is not desired to limit the ,invention to the exact details of construction herein shown and described, or obvious modifications within the scope ofthe claims may occur to persons skilled in the art.

It is claimed and desired to secureby Letters Patent:

1. In combination, a drum, an annular tire embracing said drum, and ring abutments coacting with opposite sides otsaid tire to prevent displacement thereof relatively to said drum, said tire being free from direct attachment to said drum and said abutments being rigidly attached thereto.

2. In combination, a drum, a tire surrounding said drum and having an internal bore which is larger than the external diameter of said drum,` a series of filler blocks between said drum and said tire, and abutments coacting with said tire at lopposite ends of each of said. blocks to prevent displacement of said tire along sad drum.

3. In combination, a drum, a. tire surrounding and spaced fromsaid drum, filler blocks located in the space between said drum and said tire, and abut-ments formed independently of said blocks and coacting with said tire to prevent ,relative displacement of said tire along said drum.

4. In combination, a drum, a-tire surrounding and spaced from said drum, an annular series of iiller blocks located in the space between said drum and said tire and trictionally engaging the latter, ringabutments coacting withl opposite sides of said drum, and common means for rigidly attaching said abutments and said `filler blocks to said drum.

5. In combination, a drum, a reenforcing plate surrounding said drum, a tire surrounding and spaced from said plate, an

annular series of fille-r blocks located inthe space between said tireand said plate, ring abutments coacting with opposite sides of said tire and engaging said blocks, `and common means for uniting said ring abut ments, .said filler blocks, said plate and said drum.

In testimony whereof, the signature of the inventor is aiiixed hereto.

RAY C. NEVHOUSE. 

